/*
 * @Author: Jiraiya
 * @Date: 2020-03-17 14:30:00
 * @LastEditors: Jiraiya
 * @LastEditTime: 2020-03-17 14:30:08
 * @Description: 
 */
exports.done = false;
var a = require('./a.js');
console.log('在 b.js 之中，a.done = %j', a.done);
exports.done = true;
console.log('b.js 执行完毕');